Trombone.



T. L. JACKSON.

TROMBONE. APPLICATlON FILED DEC. H, 19H.

Patented July 6, 1915.

TMm/WSL .Ja/076502Z NM., .QN w

.. WASHINGTON D c To all whom tm-ay concern: f

".Beitflmownthat I, THOMAS L. JACKSON, a citizen of'thaUnited States, residing at Cincinnati, in .the county of Hamilton and y'Statefof ,i Ohio, have invented certain new 'f anduseful Improvements in Trombones, of

whichf'theffollowing is aspecication.

- 2invention l relates to trombonesv and Chas'org-itsiprimary objectltheprovision of a vtrombone M which shall have improved means.,for tuning andforvarying the pitch thereof.v l :.4 Y l i Withfvthepabove and other objects in View, this invention consists substantially in the combination, arrangement, land Aconstruction of parts all asfhereinafter described, shown in, the accompanyingv drawings which form va partfofthis specification and show the pretrates a'partially adjusted position of` the parts;4 Fig. is anfenlarged longitudinal section y,oi-'Kother portions of the instrument c shownyin Fig.V lfandillustrates an adjusted zvrousproblemsgofmanufacturerszs .that of Vposition ofj the parts. Fig; 4 is a view of theparts-shown in Fig. 2.

p In, Order to A produce Athe most desirable tones l from av trombone .it is necessary to eliminate, asian, as possible, the interposition of cylindrical.,l sections in the ain passage of the bell member.. In vorder to manufacture a trombone'whichshall'be ofy practicable use to experienced 'players it isnelcess'ary that the relative positions of thel free ory iiared outer-'end of the bell', member,Vv as wellas thev handle of the playingfg.l slide grasped by fthe` player, remain unchanged, Vforthe reasonthat, the experienced trombone. player .in cthe use of :the .instrument .utilizesfthese relative positions of lthe playing-slide Ahandle and the outer endof the bell member in judging thefproper distance :tov shift ytheplaying; slide. Yiolationgofthese twoessentia-ls of'trombone. construction must be avoided asfgfarffas possiblefimthemaking of ,the;instrurle11tf and fonefiof the. most Se- TROMBONE.

. Specification Of Letters Patent, Apinication Afiled December 11, 1911.:

vshank 11, is aftubular OFFICE,

fmnorAs gn .TAcKsON,l or yCINCINNATI,v On1o,-AssIGNOn To FnANKV BOLTON a5-co., OF

f 1 CHICAGO, ILLINOIS; A `CORPORATION Orl ILL1NoIs.f

y iafente juiye, 1915. jseriainakeelieaa providing tuning their ,t'rombones' maintaining' the flared endjof lthe I dlef of theV playingl slide, and likewise producing' as little cylindrical `section of air passage inthe bell memberasfpossible.

My invention `discloses means wherebythe amount -of "cylindrical portion of air pasor'key changing devices in while at the saine time relative positions" of the sage interposed inthe tapering portions of the trombone, inthe tuning Ofthejdevice, is greatly reducedffrom that interposed in the trombones' 'heretofore constructed, which had tuning devices forming 'partY of the bellfmeniber itself; 'and' itfurther discloses means forltuning the trombone, orchang- ,ingl itsvkey,l withoutthe slightest change in the relative ypositions of'theliandle of the playing slide and the aredouter end of the bell. member;` f

`ReferringI moreY particularly `to the ldrawing, abell member 10 is provided with a cylindrical portiony 24 secured .lthereto by means ofa fitting 17. v'lhevme'mber 17 may be secured to members 1Q and 24 by means of solder,

lform a rlgid connection. A colylar 14 is' secured to the bellmember-lO by meansof a forked brace comprising mem- .bersl 15and- 16; the member 16 is somewhat curvedy andy secured to fitting:V 17. .The arrangement is such that collar'14 is `disposed lsubstantially parallel with the cylindrical portion 24. y vv 1 The tuningslide or shank-11 isprovided `at one. end with a cylindrical' portion.' 23

rigid connection therebetween. The bores of thetuningslide x11 andmember23 are gradually increasedin diameter throughout their length so that the wind passage of the instrument increases in diameter from the lend 12'ofV tuningslide. 11 to the outer end' of bell, 10.. jt the end 12y of .tuning member., 13 4slidably ttingin the'boreof collar 14 j and secured to thev tuning-shank;11v by means of ,a

collar` 18.- Atl one end of;cOllajr114' is a clamp 21 providedl with an adjusting screw 22. and adapted-to ,engagevfvthe .member 13 -and secure the-.tuning slide against movement. in thefbelfl' member' A10 and collar 14.

In lthis specicatom.,thefmouth piper of bell member and the han- I -brazing or-other suitable means v 1n order to y ing slide kfirmness.

y offmember `13 fand and 13 against" relative movement.l On the member y 16, the collar! 11i', the clamp'. 21r andits Ascrevv V-l'e'ngtlrof the ainfpassgageofvthe instrument.y

the instrument isl considered to comprise that portion i of,4 the. 'tubing between the mouth piecev 31 and -1the}f'membe1t13-1, A

cylindrical portion 26 ofthe mouth pipe is mounted in the bore of member'l andis vsecured in a tting'27 and the latter playing slide 2'9 V'of the instrument. f One end .ofv itting 2 '1 ,is flared the 'playslidably Connected','vvith'the' to receive the taperingfend29of ing slide 29,1andrthe latter isfprovided With brace members30-`and32lwhich are of usual construction and' adapted 'to give the .play- IAtthe mouth end of the playing slide 29, isa mouthpiece 31 ofconventional construction. Onthe end of member `13opposi'te" tuning Slidell, is a vclamp 19 which is provided'y with an'V adjusting "screw-201* and fis adapted to yclamp the end secure the .members 26 tting 27 is a'handle 351 adapted to facilitate'."makngjadjustments ofmember 26 in member-"13'.y ,e .Y l Infdescribi'g' the tuningv or pitchffchanging Operationsoffthe parts shovvin'the bell 10, together with the braces 15 and 22, randthe v'extension 24Will be considered as fixed portions of the instrument With relation to which the other Iportionsare movable.,` jIn full lines in yFig; 1 is. shown, the adjustment tlor" the parts in Which'the air passage ofthe instrument is .shortestf'llo 'lengthen the l 'nptrume'nt y from,l this position three methods may be employed.v `Inl the fst method the. mouth. 'Piece ,31; the Playing "slide 29, the brace` 32,. the"collar27, and

handle 34;,'maybe the bell member 10, l

the Vextension 24,. the collar 14,' and the Vclamp 21, as fixed portions of 'the instrument, and by loosening the clamps 19- and 21, the-tuning slide 11, itsextension 2,3, the colvrlar. 18, the mouth l u Y clamp; 19" may be ld ravvn from the position 'shown yin Fig. 1 in' vfull lines to the 'positionof. those parts shown in Fig.; 1 1n dotand-dash lines, `followingV1 which, lby operation of the-clamping screws 20and 22,1 the clamps 19 and 20 may be .tightened linstrument 'rendered again secure ,for use. 'i In ythe second method vof Aadjustment'tiv'o movements" of the `parts are employed." The Y firstv movement includes-*theloosening of the clamp i9 andtheisniftingtt the portion 26 of-tl IIiQllth pipe,fthef handle 3 4," theared end `27,jthe 'brace 32,` the'playingl 1slide 29, its hand1e"30, andl the,r'nu'thv piece' 31, Afrom "the" position shownin f'ull lines' in'` Fig. 1' to the positionshovn 'gted linsfin Eigaflg-fwhch-jaxnoint of shift is equal to 'oneh'alfffthe desired increase of After' this first shift'fthef'clamping "rmember consideredftogethenwithv the .bracesr'l and 16,

pipe portion '13', `andthe and the,`

"orthpseparts i'n dotj y19A-ris tightened; :securing'ltheporten 13 of ondY moyement'is performed, which includes; loosening the clamping member 21 andiL shifting the parts just shifted, together.; -With the parts noW attached to them by' V,clamp-19,namely 13, 18, 11,` 11%," andi-{243,1} VWithin the` brace l and. clamping member 21 and'ina direction opposite vto the direct-ff .i tion of shift of Athepartsin the first moire-117 ment. j The shift ,ofy parts in` movement is in amount equalto. the: a1nenntV of shift of the I'Jartsmov'ed.l fthefir. s t Y1 movement which leaves the'tuningly Slide 11, the collar 11a., the extensionl 23,llltheffacollar 18,'.` the portion '13', andthe clampingrm .ber 19` in` the position shovvninmdot .dashixlines in. Figi; 1,' 'Y and*,e 1;]` oses,Av shown in dot-and-,dash lines ini, a portion fof ,the extensionj25 rand! the mouthpipe portionl 26.'.[`o"stateftK movementin.. adifferent Way, the 'playing u `-slide of theinstrument,- together Withjthe mouth ,piece and *the 'A portionr "off thel t mouth pipe, have been)shiftedaivayfrom i the Vcollar 14a distance equalto one-half: A thev desired increase of, length,fllovving fj-4 .which these4 partshavebeenf`returned'to .their first position simultaneously-"Withthe i, movement of the tuning'slidel'andfft partsthereto attached in the.r opposit rectionan equal distance. i 'I .1 ,A third method of adjusting' is hdb fversing the orderl of performance lofthet movements employed in thesecond'fmje'th '7 In- Fig. 2,.the parts sho'wngthereinlrare dica'ted" in their positions` as i y the"v resliltf thee, firstl movement Lor* stepfin-"th'e "th d method of "adjustment otthefinstr" This Will be evident from the fact thatf portion 26 Yof VtheV mouth pipel is ishlo'vvm :Fig 2` as telescoped 'completelyj with portion 13 of the'mouth pipe, Whereas 1 complete adjustment ofthe 'istrure'ntth' portion 26 lis partially? withdrawnY` frmjia a 'fully' seated position within; the' pottieniis, In Fig.4 3 is 'shown 'thepositionjof"parts i1, 23, 24, 16 and lioiin"thejeqmpleted 'jiustme't'f thllsliumeiit- 'i p f Fig. 4Q illustrates `the"parts of Fig,

y"fully ytuijusted""posititml" 1 v l Itis Yto 'be noted Lthatin thefse `o yj one "of the methodsof adjustment Ydescrilfd* rv the'frelationofthe playirig'slide'an'glm thl ,piece to'theQbell member lO'isleft, aftv lie` e' adjustment, in the samepositimt'it setup ed y atrst, 'and' it is tdb';,furtherfigotedth l "only "al half'of thelengtlf added to' h v"passage of theinstrumentisfjmserte tapering' fctjtions 1o f 'and' 11111 Thtttg is; only :cylindrical 'portiilf'ifinsertedfii rthe-mouth pipe and the parts just shifted@ mto Xed-relatione. Following/@hist thesest.

' comprisingthe mouth pipe of the instru- It will be seen that in my construction rthe rportion 26 of the mouth pipe telescopes AwithinA the'portion 13, and that the exteni lsion'23v telescopes within the extension 24.

Thisis.r done in order that the yair passing throughfthe instrument may, in each `of these instances, Ago from an air passage off one diameter to the air passage of an increasedl diameter. Also it is Vto be noted that the collar 18 contacting with the clampl' thelcollar '14' limits 4the relative movement f the mouth 20 4 ingymember 21 limits the relative moveme .it between the collarv 14 and the portion 13 of the mouth pipe in one direction; that contact between the clamping membery 19 and pipe.

In the accompanying drawings and in the foregoing specification isset forththe preferred embodiment of my invention, rbut it is obvious that one skilled in the art may makemodications of the same without departing from the spirit of the invention. What is claimed yas new'is; v

1. A slidetrombone comprising a bell \member; a collar secured to said bell member; a tuning slide having a portion adjustwith said bell; and a mouth ably secured in said collar and another por-v tion connected 'plpehaving one end adjustably mounted in' f the first-mentioned portion of said tuningk slide.

2. A slide trombone comprising a bell member; a collarsecured in xed yrelation to said bell-f; Aa tuning slide having one end yportion adjustably connected with the bell member and its other endportion slidably mounted in said collar; a `clamp on lsaid collarv adapted to secure the last mention'ed end portion of the tuning slide in said collar; and a mouth pipe having one emcl adjustably connected with said tuning sli e.

` `3. A -slide trombone comprising a bell -member; a collar secured in fixed relation with said bell member; a tuning slide having its end portions slidably mounted in the bores of said collar and bell member; a clamp on said collar adapted to engage said tuning slide and securethe latter in` fixed relation with said bell member and collar; a mouth pipe having one end slidably mounted in the bore of one end of'the tuning slide; and a clamp on said tunlng slide securing said mouth pipe in fixed-relation with the tuning slide.

4. A slide trombone comprising a bell member; a collar secured to said bell member; a tuning slide having one end slidably mounted in said collar andits other end slidably mounted in said bellv member; a mouth pipe vhaving one end slidably mounted in said tuning slide, and clamps engaging said tuning slide and mouth pipe securing said bell member, tuning slide and mouth pipe in xed relation.

p v.5. A slide trombonecomprising a tapering bell member havinga cylindrical por\ 75 tion at its smaller end; a ycollar'having a cylindrical bore .and secured to said bell rmember; a tapering tuning slide having a cylindrical end portion slidably mounted in said collar and another cylindrical end portion slidably mounted in the cylindrical portion of the bell member; a mouth pipe having one end slidably mounted in the cylindrical end portion of the tuning slide away from the bell member; and clamps engaging the tuning slide 'and mouth pipe securing said bell member, tuning slide and mouthr lpipe in fixed relation.

In testimony whereof I have signed myv name to thisspecication, in the presence of two subscribing witnesses, on this 6th day 'of December A. D. 1911.y

TI-IOS L. JACKSON. Witnesses:

ARTHUR Rises, rf DONNELLY Wnvnra (h'aiiersr ofthis patent may be obtained for ive cents each, by addressingr the Commissioner of Patents,

.- l A Washington, D. C. 

